RMS, Italy, is a prolific manufacturer of OEM quality aftermarket parts for many scooter brands, including Vespa Vintage and Vespa Modern parts. Your Vespa needs a new "voice"? This is an OEM quality RMS Horn Vespa Primavera ET3 50 - 125cc - zinc plated 6V AC horn with 72mm diameter. As an OEM quality part, it is basically identical to the original horn and can be installed without any additional modifications.